5
Global
Height rank
Lotte World Tower
Seoul South Korea
Height

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

1
To Tip:

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest point of the building, irrespective of material or function of the highest element (i.e., including antennae, flagpoles, signage and other functional-technical equipment).

555.7 m / 1,823 ft
2
Architectural:

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

554.5 m / 1,819 ft
3
Occupied:

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.

497.6 m / 1,633 ft
1 2 3 Lotte World Tower Outline
Floors

The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

Above Ground

The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

123
Below Ground

The number of floors below ground should include all major floors located below the ground floor level.

6
Height 554.53 m / 1,819 ft
Floors 123
Official Name

The current legal building name.

Lotte World Tower
Other Names

Other names the building has commonly been known as, including former names, common informal names, local names, etc.

롯데월드타워, Lotte Jamsil Super Tower, Lotte World Premium Tower
Type

CTBUH collects data on two major types of tall structures: 'Buildings' and 'Telecommunications / Observation Towers.' A 'Building' is a structure where at least 50% of the height is occupied by usable floor area. A 'Telecommunications / Observation Tower' is a structure where less than 50% of the structure's height is occupied by usable floor area. Only 'Buildings' are eligible for the CTBUH 'Tallest Buildings' lists.

Building
Status
Completed
Architecturally Topped Out
Structurally Topped Out
Under Construction
Proposed
On Hold
Never Completed
Vision
Competition Entry
Canceled
Proposed Renovation
Under Renovation
Renovated
Under Demolition
Demolished
Completed, 2017
Country

The CTBUH follows the United Nations's definition of Country, and thus uses the lists and codes established by that organization.

City

The CTBUH follows the United Nations's definition of City, and thus uses the lists and codes established by that organization.

Function

A single-function tall building is defined as one where 85% or more of its usable floor area is dedicated to a single usage. Thus a building with 90% office floor area would be said to be an "office" building, irrespective of other minor functions it may also contain.

A mixed-use tall building contains two or more functions (or uses), where each of the functions occupy a significant proportion of the tower's total space. Support areas such as car parks and mechanical plant space do not constitute mixed-use functions. Functions are denoted on CTBUH "Tallest Building" lists in descending order, e.g., "hotel/office" indicates hotel function above office function.

hotel / residential / office / retail
Structural Material

Steel
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from steel. Note that a building of steel construction with a floor system of concrete planks or concrete slab on top of steel beams is still considered a “steel” structure as the concrete elements are not acting as the primary structure.

Reinforced Concrete
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from concrete which has been cast in place and utilizes steel reinforcement bars.

Precast Concrete
Both the main vertical/lateral structural elements and the floor spanning system are constructed from steel reinforced concrete which has been precast as individual components and assembled together on-site.

Mixed-Structure
Utilizes distinct systems (e.g. steel, concrete, timber), one on top of the other. For example, a steel/concrete indicates a steel structural system located on top of a concrete structural system, with the opposite true of concrete/steel.

Composite
A combination of materials (e.g. steel, concrete, timber) are used together in the main structural elements. Examples include buildings which utilize: steel columns with a floor system of reinforced concrete beams; a steel frame system with a concrete core; concrete-encased steel columns; concrete-filled steel tubes; etc. Where known, the CTBUH database breaks out the materials used in a composite building’s core, columns, and floor spanning separately.

composite
Core
Reinforced Concrete
Columns
Concrete Encased Steel
Floor Spanning
Steel
Height

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

Architectural
554.53 m / 1,819 ft
To Tip
555.74 m / 1,823 ft
Occupied
497.6 m / 1,633 ft
Observatory
497.6 m / 1,633 ft
Floors Above Ground

The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

123
Floors Below Ground

The number of floors below ground should include all major floors located below the ground floor level.

6
# of Hotel Rooms

Number of Hotel Rooms refers to the total number of hotel rooms contained within a particular building.

260
# of Elevators

Number of Elevators refers to the total number of elevator cars (not shafts) contained within a particular building (including public, private and freight elevators).

58
Tower GFA

Tower GFA refers to the total gross floor area within the tower footprint, not including adjoining podiums, connected buildings or other towers within the development.

304,081 m² / 3,273,101 ft²
Rankings
#
5
Tallest in the World
#
3
Tallest in Asia
#
1
Tallest in South Korea
#
1
Tallest in Seoul
#
4
Tallest Mixed-use Building in the World
#
2
Tallest Mixed-use Building in Asia
#
1
Tallest Mixed-use Building in South Korea
#
1
Tallest Mixed-use Building in Seoul
#
3
Tallest Composite Building in the World
#
3
Tallest Composite Building in Asia
#
1
Tallest Composite Building in South Korea
#
1
Tallest Composite Building in Seoul
Construction Schedule
2011

Construction Start

2017

Completed

Owner/Developer
Lotte Property & Development
Architect
Structural Engineer
Leslie E. Robertson Associates
MEP Engineer
WSP | Parsons Brinckerhoff
LOTTE Engineering & Construction

Energy Concept

WSP | Parsons Brinckerhoff

Façade Maintenance

Manntech Building System; Lerch Bates

Fire

Aon Fire Protection Engineering

LEED

WSP | Parsons Brinckerhoff

Marketing

The Leading Hotels of the World, Ltd.

Security

Aon Global Risk Consulting

Vertical Transportation

Fortune Shepler Consulting

Wind

Elevator

Otis Elevator Company; Mitsubishi Elevator and Escalator

Façade Maintenance Equipment

Manntech Building System

Formwork

Joints/Fasteners

CTBUH Awards & Distinctions

Best Tall Building Asia & Australasia 2018 Award of Excellence

2018 CTBUH Awards

CTBUH Initiatives

5 February 2018 - CTBUH Publication

Vertical Transportation: Ascent & Acceleration


12 September 2017 - CTBUH Research

See more

Videos

31 May 2018 | Seoul

Joining the ranks of the world’s top ten tallest buildings, the 123-story Lotte World Tower rises to 555 meters and offers one of the world’s...

See more

Research

20 March 2020

CTBUH Research

In the first edition of the 2012 Journal, CTBUH published a Tall Buildings in Numbers study titled Tallest 20 in 2020: Era of the Megatall—The...

See more

Global News

27 March 2019 | Busan

POSCO Engineering & Construction has completed the structural work for Haeundae LCT The Sharp, a high-rise apartment complex in Busan, three-and-one-half years after the buildings’...

See more

About Lotte World Tower

Taking inspiration from traditional Korean art forms in the design of the various interior program spaces, the sleek tapered form of Lotte World Tower will stand out from Seoul’s rocky, mountainous topography. The tower is programmed with a greater variety of functions than is normally found in a tall building. It contains retail components, offices, a 7-star luxury hotel, and an officetel. Officetels, common in South Korean real estate, offer studio-apartment-style accommodations for people who work in the building and often feature certain services found in hotels, such as furnishings, a security desk, and gym access. The building’s top 10 stories are earmarked for extensive public use and entertainment facilities, including an observation deck and rooftop café.

The design of the tower melds a modern aesthetic with forms inspired by Korean ceramics, porcelain, and calligraphy. The seam that runs from top to bottom of the structure gestures toward the old center of the city. Elegance of form was one of the prime objectives, following the desire of stakeholders to bestow a beautiful monument to the capital city skyline. Exterior materials will be light-toned silver glass accented by a filigree of white lacquered metal.

Lotte World Tower has been designed and constructed at the same time as a 10-story base that accommodates as much area as its vertical counterpart. Vertical density is linked to horizontal density, and the range of complementary uses is increased. Connections between the two major building components are made via interior pathways at many levels, but also by active outdoor public space. In fact, one of the most effective measures taken to activate the tower and connect it to adjacent buildings is the outdoor plaza. This space forms an “outdoor room,” compressed enough in its dimensions to encourage visual and pedestrian penetration of its boundary walls.

CTBUH Awards & Distinctions

Best Tall Building Asia & Australasia 2018 Award of Excellence

2018 CTBUH Awards

31 May 2018 | Seoul

Joining the ranks of the world’s top ten tallest buildings, the 123-story Lotte World Tower rises to 555 meters and offers one of the world’s...

26 October 2015 | Seoul

The Jamsil Lotte World Tower, a high-rise component of the 2nd Lotte World Amusement Complex, is being constructed at Jamsil, Seoul, Korea. This 123-story building...

26 October 2015 | Seoul

Jong-Ho Kim, Chang Minwoo Structural Consultants; William Howell, Turner International; and Dennis Poon, Thornton Tomasetti, answer questions at the end of 2015 New York Conference...

26 October 2015 | Seoul

James von Klemperer of KPF is interviewed by Chris Bentley during the 2015 CTBUH New York Conference at the Grand Hyatt New York. James discusses...

11 October 2011 | Seoul

When completed, the Lotte Jamsil Super Tower, at 555-meter, will be the tallest building in Seoul. The mat foundation is completed, and the tower construction...

11 October 2011 | Seoul

Lotte World Tower is a mixed-use building with 6 basement levels and 123 levels above ground. It includes Hotel, Office, Officetel and Retail function. The...

20 March 2020

CTBUH Research

In the first edition of the 2012 Journal, CTBUH published a Tall Buildings in Numbers study titled Tallest 20 in 2020: Era of the Megatall—The...

28 December 2019

SawTeen See, Robert Bird Group Pty Ltd

Aerodynamic damping through the use of vertical long slots reduces the dynamic component of the wind loads on the building. Seminal examples include the three-legged...

01 March 2018

Forth Bagley, Kohn Pederson Fox Associates

Increasingly, mixed-use, multi-program complexes are emerging as the standard development model around the world. As their prominence grows, these projects are becoming increasingly complex. Program...

05 February 2018

This 2017 Tall Building Year in Review / Tall Buildings in Numbers data analysis report shows that more buildings of 200 meters’ height or greater...

05 February 2018

James von Klemperer, Kohn Pedersen Fox Associates

The Lotte World Tower became the world’s fifth-tallest building upon completion in 2017, and is currently the only supertall building (300 meters or higher) in...

01 September 2017

Hyun-hee Ryu, Jong-soo Kim, Eun-gyu Choi & Sang-hoon Lee, CS Structural Engineering

The purpose of structural health monitoring is to evaluate structural behavior due to various external loads through installation of appropriate measurement. Accordingly, a guideline for...

27 March 2019 | Busan

POSCO Engineering & Construction has completed the structural work for Haeundae LCT The Sharp, a high-rise apartment complex in Busan, three-and-one-half years after the buildings’...

28 February 2019 | Seoul

The administrative procedures have been completed to erect what could be the new tallest building in Korea, after Hyundai Motor Group applied for the construction...

5 February 2018

In the latest CTBUH journal, examine a case study of Lotte World Tower, Seoul's first supertall, in addition to other great features.

12 September 2017

Vertical Transportation: Ascent & Acceleration

CTBUH partnered with Guinness World Records to identify the commercial building with the fastest elevator speeds and longest vertical runs.

4 April 2017

CTBUH Certifies Lotte Tower as Fifth Tallest Building Worldwide

CTBUH has recognized the completion of Lotte World Tower, now the fifth tallest building worldwide at 555 meters.

13 October 2016

The Council is pleased to announce the Top Company Rankings for numerous disciplines as derived from the list of projects appearing in 100 of the World’s Tallest Buildings.

8 July 2016

2016 China-Japan-Korea Tall Building Forum

The third China-Japan-Korea Tall Building Forum was held at the Tokyo Institute of Technology, on the topic of "Innovative Motion Engineering in Tall Buildings."

16 October 2015

Tall Buildings: From Design to Construction and Maintenance

The 2015 Korea-China-Japan Tall Building Forum was held jointly between the CTBUH chapters of the three countries.